/**
* Handle the command.
*
* @param ConnectToPersistentSubscription $command
*
* @return object
*/
function request($command)
{
return new Emitter(function (callable $emit) use($command) {
while ($this->running) {
try {
$response = (yield from $this->send(new Request('GET', sprintf('/subscriptions/%s/%s/%s?embed=body', $command->getEventStreamId(), $command->getSubscriptionId(), $command->getAllowedInFlightMessages()), ['Accept' => 'application/vnd.eventstore.competingatom+json'])));
$data = json_decode($response->getBody()->getContents(), true);
if (count($data['entries'])) {
foreach (array_reverse($data['entries']) as $entry) {
try {
$this->assertEvent($entry);
(yield $emit(new PersistentSubsciptionStreamEventAppeared($this->buildEvent($entry))));
} catch (AssertionFailedException $e) {
continue;
}
}
} else {
(yield Awaitable\resolve()->delay(0.5));
}
} catch (RequestException $error) {
if (404 === $error->getResponse()->getStatusCode()) {
throw new NonExistentSubscriptionException(sprintf('Subscription %s-%s does not exist: %s', $command->getEventStreamId(), $command->getSubscriptionId(), $error->getMessage()), $error->getCode(), $error);
}
throw $error;
}
}
});
}
/**
* Input heartbeat loop
*/
public function inputHeartbeatLoop()
{
while ($this->isOpen()) {
(yield Awaitable\resolve()->delay($this->heartbeat * 2));
if (!$this->something_received_between_heartbeat_checks) {
(yield $this->close());
} else {
$this->something_received_between_heartbeat_checks = false;
}
}
}
/**
* @coroutine
*
* @param float $time Time to sleep in seconds.
*
* @return \Generator
*
* @resolve float Actual time slept in seconds.
*/
function sleep(float $time) : \Generator
{
$start = (yield Awaitable\resolve(microtime(true))->delay($time));
return microtime(true) - $start;
}